Commit f3dc0962 authored by Long Li's avatar Long Li Committed by Leon Romanovsky
Browse files

net: mana: Record the physical address for doorbell page region 



For supporting RDMA device with multiple user contexts with their
individual doorbell pages, record the start address of doorbell page
region for use by the RDMA driver to allocate user context doorbell IDs.

Reviewed-by: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarLong Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1667502990-2559-3-git-send-email-longli@linuxonhyperv.com


Acked-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
parent a69839d4

drivers/net/ethernet/microsoft/mana/gdma.h

+2 −0
Original line number Diff line number Diff line
@@ -351,9 +351,11 @@ struct gdma_context { 
	u32			test_event_eq_id;



	bool			is_pf;

	phys_addr_t		bar0_pa;

	void __iomem		*bar0_va;

	void __iomem		*shm_base;

	void __iomem		*db_page_base;

	phys_addr_t		phys_db_page_base;

	u32 db_page_size;



	/* Shared memory chanenl (used to bootstrap HWC) */

drivers/net/ethernet/microsoft/mana/gdma_main.c

+4 −0
Original line number Diff line number Diff line
@@ -44,6 +44,9 @@ static void mana_gd_init_vf_regs(struct pci_dev *pdev) 
	gc->db_page_base = gc->bar0_va +

				mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);



	gc->phys_db_page_base = gc->bar0_pa +

				mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);



	gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET);

}
@@ -1377,6 +1380,7 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 


	mutex_init(&gc->eq_test_event_mutex);

	pci_set_drvdata(pdev, gc);

	gc->bar0_pa = pci_resource_start(pdev, 0);



	bar0_va = pci_iomap(pdev, bar, 0);

	if (!bar0_va)